files/en-us/web/api/rsaoaepparams/index.md
{{ APIRef("Web Crypto API") }}
The RsaOaepParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into {{domxref("SubtleCrypto.encrypt()")}}, {{domxref("SubtleCrypto.decrypt()")}}, {{domxref("SubtleCrypto.wrapKey()")}}, or {{domxref("SubtleCrypto.unwrapKey()")}}, when using the RSA_OAEP algorithm.
name
RSA-OAEP.label {{optional_inline}}
: An {{jsxref("ArrayBuffer")}}, a {{jsxref("TypedArray")}}, or a {{jsxref("DataView")}} — an array of bytes that does not itself need to be encrypted but which should be bound to the ciphertext. A digest of the label is part of the input to the encryption operation.
Unless your application calls for a label, you can just omit this argument and it will not affect the security of the encryption operation.
See the examples for {{domxref("SubtleCrypto.encrypt()")}} and {{domxref("SubtleCrypto.decrypt()")}}.
{{Specifications}}
Browsers that support the "RSA-OAEP" algorithm for the {{domxref("SubtleCrypto.encrypt()")}}, {{domxref("SubtleCrypto.decrypt()")}}, {{domxref("SubtleCrypto.wrapKey()")}}, or {{domxref("SubtleCrypto.unwrapKey()")}} methods will support this type.